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| author | Pete Cooper <peter_cooper@apple.com> | 2015-04-22 18:05:13 +0000 |
|---|---|---|
| committer | Pete Cooper <peter_cooper@apple.com> | 2015-04-22 18:05:13 +0000 |
| commit | 037b700b7f0caecabc745217fd421c8bca06f6eb (patch) | |
| tree | b26fe1f207d91558e0de09d95b2b35e988908922 /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | c96ee08016b09f29770634bfaaacc79ef332733c (diff) | |
| download | bcm5719-llvm-037b700b7f0caecabc745217fd421c8bca06f6eb.tar.gz bcm5719-llvm-037b700b7f0caecabc745217fd421c8bca06f6eb.zip | |
[AArch64] Use MachineRegisterInfo instead of LiveIntervals to calculate liveness. NFC.
The CondOpt pass currently uses LiveIntervals to set the dead flag on a def. This patch uses MachineRegisterInfo::use_empty instead as that is equivalent to the def being dead.
This removes an instance of LiveIntervals in the pass manager pipeline and saves 3.8% of compile time on llc conpiled for AArch64.
Reviewed by Chad Rosier and Zhaoshi.
llvm-svn: 235532
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions
